Meet the Team at Cornerstone

Cornerstone Team

At Cornerstone Family Wellness, care is not built around a system—it’s built around people.


Each member of this team plays a role in creating an environment where you feel known, respected, and genuinely cared for. From the first phone call to your time in the exam room, our goal is to make every interaction feel thoughtful, unhurried, and personal.


A professional in a white medical coat standing outdoors with arms crossed, smiling at the camera.

Johnna Johnson, PA-C, MMSC., CFMP

Founder & Physician Assistant

Cornerstone Family Wellness was created from a desire to return to the kind of care that many feel has been lost—care that takes time, listens fully, and looks at the whole person.


Over the past 20+ years in healthcare, I’ve had the opportunity to care for patients in many different settings and seasons of life. Along the way, I began to see a growing need for something different—a better understanding of the full picture of someone’s health, addressing root causes of disease.


That’s what led me to create Cornerstone.


My approach is centered around thoughtful, personalized care—looking beyond symptoms to understand lifestyle, history, and the pieces that often go overlooked. I believe healing begins with being heard, and that good medicine starts with connection.


I’m deeply rooted in this community, and it means a great deal to care for the people who call it home.


Below are the trusted individuals who help bring this vision to life each day.


Each member of the Cornerstone team plays a meaningful role in the care you’ll experience here.


From the moment you walk through the door, you’ll be met by people who are committed to making your experience feel personal, welcoming, and truly cared for.


Click each profile to learn more about the people behind Cornerstone care.

MacKenzie Rooks

Office Administrator

MacKenzie is often the first voice you’ll hear and the first face you’ll see at Cornerstone.

Megan Caldwell, RT(R)

Radiologic Technologist

Megan serves as the Radiologic Technologist at Cornerstone, bringing experience in both pediatric and orthopedic care.

Shannon Buice, RN

Registered Nurse

Shannon is a Registered Nurse with 14 years of healthcare experience, beginning her career as an LPN before earning her RN license.